مهندسی

A battery is a device that stores energy and provides power to machines, devices, or vehicles. It works by converting stored chemical energy into electrical energy, which can be used to run various equipment. Batteries come in different sizes and power levels depending on their use, from small ones in electronic devices to large ones in cars. They are essential for powering things like phones, flashlights, and cars. Over time, batteries lose their ability to hold charge and need to be replaced or recharged.

Engineering is the field that involves designing, building, and maintaining structures, machines, systems, or devices to solve practical problems. Engineers use scientific principles and math to create solutions that are efficient, safe, and cost-effective. They work in many areas, such as construction, technology, transportation, and energy, to improve daily life. Engineering combines creativity and technical knowledge to turn ideas into real-world applications, from bridges to computers and everything in between.

A motor is a device that converts electrical energy into mechanical energy to make something move. In vehicles, motors are used to power things like electric cars, where they replace the traditional engine. Motors work by using electricity to create motion through magnetic forces, which drive the vehicle's wheels. Unlike an engine, which relies on burning fuel, a motor typically uses electricity from batteries or another power source. Motors are also found in various machines and appliances, such as fans, pumps, and power tools, to make them operate. The efficiency of a motor affects the overall performance and energy use of the device it powers.

An amplifier is an electronic device that increases the strength of an audio or electrical signal. It takes a weak input signal and boosts it to a higher level, which can then be sent to speakers, headphones, or other equipment. In audio systems, amplifiers enhance the sound signal to ensure it is loud enough and clear enough for listening. They come in various types, including those for home audio systems, musical instruments, and professional sound setups, each designed to meet specific needs and performance requirements.

A spare part is an extra piece or component kept on hand to replace a damaged or worn-out part in a vehicle, machine, or equipment. Spare parts can include items like belts, filters, bulbs, or larger components like engines and transmissions. Having spare parts available helps reduce the time a vehicle or machine is not working and ensures that repairs can be made quickly without waiting for new parts to be ordered. They are commonly used in maintenance and repair work to keep vehicles or machines running smoothly. Proper storage and labeling of spare parts are important for quick access when needed.